Exploration with Wavelet Methods

Long-term variability

Cycles
The wavelet scalogram and power spectrum of C14 production rate (0(=1950)-115000BP) show many longer time-scales such as about 200 years, 400-500 years, 900-1100 years and 2300-2500 years.

Lundstedt, H., Liszka, R. Lundin and R. Muscheler, Long-Term Solar Activity Explored with Wavelet Methods, Annal. Geophys., 24, 1-9, 2006.